E quitters for venlafaxine XR, mainly due to a worst adverse events profile. On the pregabalin arm, 3.3 discontinued due to lack of efficacy, 12.4 due to adverse events, and 11.6 for other reasons. On the venlafaxine XR and placebo arms, the figures were 3.2 , 17.6 and 12.0 ; and 9.4 , 5.5 and 12.5 , respectively.Utility scoresHealth-related utility values were based on the EQ-5D application